All living beings are born, develop and die. It is an irreversible and continuous process, a constant physical and mental transformation. Since we are within the maternal womb, our body changes; first, to face life on the inside and then, to perfect the wonderful machine that is the body and the different skills and processes we perform thanks to it.
Our life cycle has well defined stages, in which the growth, maturation and degradation of the different organs and tissues that make up the human body can be observed. There are not only great external differences from what we were as children and what we are as adults or old people.
Each cell that makes us up also suffers the effects of time.Averagely, the human being lives to the age of 70.This is an important amount of years, in which we acquire capabilities such as walking, communicating and even beginning a new life cycle through reproduction.